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A wheel of radius 0.29 m is rotating at a uniform rate. If a point at the outer edge of the wheel has a speed of 25 m/s, what is the rate of rotation, in terms of rpm (revolution per minute)?
At rest, the car's horn sounds at a frequency of 455 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 427 Hz. What is speed of the car.
Two capacitors connected in parallel produce an equivalent capacitance of 35.0?F, What is the individual capacitance of each capacitor
The entrance exposure during a mammography examination is 100mR. Suppose the photon bean consists of photons each of energy 20 keV. How many photons are incident on a 1 cm^2 surface of breast tissue?
A laser can be used to suspend beads in the earth's gravitational field. A bead with mass 5 * 10^-6 g and density of .400 g/cm^3 is to be suspended. Determine the radiation intensity needed to support the bead.
The International Space Station (ISS) travels with speed v=10 km/s during low earth orbit where there is a free charge density of 10^5 elch/scm^3. The ISS has a cross-section of 900 m^2. What is the current (in Amps) impinging on the ISS?
A 50 foot garden hose isfilled with sea water. What is the resistance from one end to the other, what is the current density in the hose
A car is moving on a flat horizontal circular track of radius 120 m. The speed of the car is constant, 15m/s. The mass of the car is 1200 kg. Ignore air resistance. What force is keeping the car in the circle?
consider light that is refracted by a prism shaped like an equilateral triangle. the incident ray is parallel with the
The drawing shows an equilateral triangle, each side of which has a length of 1.59 cm. Point charges are fixed to each corner, Determine the charge qA and q
A box of mass m, is released from rest and slides down a 3 m high frictionless chute. What is there common speed after the collision
There is a region with a constant magnetic field 5.2T. The magnetic field is directed out of the page. What is the current induced in the rod if the resistance is 4.9ohms
A galvanometer with a coil resistance of 11.0 and the full-scale current of 0.150 mA is used with a shunt resistor to make an ammeter. The ammeter registers the maximum current of 4.00 mA. Find the equivalent resistance of the ammeter.
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